<div class="search">
 <form method="GET" action="<?php echo $this->_var['wap_site']; ?>/index.php?app=search" id="gsearch" >
  <input name="app" id="app" type="hidden" value="search"><input name="act" id="act" type="hidden" value="index">
  <input name="keyword" value="<?php if ($_GET['keyword']): ?><?php echo $_GET['keyword']; ?><?php endif; ?>"  placeholder="请输入搜索内容" class="soinput"/>
  <button type='submit' class='submit' value=" "></button>
 </form>
</div>